William tayloe



` (No Model.) Y

TAYLOR.

SPIKE. No. 278,628. Patented May 29,1883.

u' WWWWWWWWWW HW 77/7c-Z7zee. Inwnm, PMO? Q/Mgt Vzo UNITED STATES*PATENT OFFICE.

WILLIAM TAYLoE, or PIfr'rsBUEG, rENNsYLvA'NIA, AssIGNoE To THE y ANGULAESTEEL NAIL COMPANY, (LIMITEn) or sAME PLAGE;

SPIKE.

SPECIFICATION forming part of Letters Patent No. 278,628, dated May 29,1883.

Application tiled January 19, 1883. (No model.)

To all whom it may concern:

Y bind into the wood when the spike or bolt is Be it known thatI,`WILLIAM TAYLOR,`a driven therein".` The grooves are curved so citizenof Great Britain, residing at Pittsburg, in the county ot' Allegheny andState of Pennsylvania, have invented a new and Improved Spike and Plan`of Making the Same, of which the following is a specication.

'lhis invention relates .to certain iniprovef` ments in bolts or spikesfor securing the rails in railroads to thesleepers or ties; and it hasfor its object to provide a spike which, when driven home, will bepermanently held in its seat, as more fully hereinafter specified.

The above-mentioned object I attain by the means illustrated intheaccompanying drawings, in which- V Figure 1 illustrates a side elevationof my improved-spike or bolt; Fig. 2, a longitudinal sectional view ofthe same; Fig, an eleva tion of the bolt or spike, and Fig. 4 acrosssection of the same.

The letter A indicates4 the `spike or bolt,

which is provided with-the usual head, preferably extended to one side,as shown. The Asaid. spike or bolt has formed on opposite sideslongitudinal recesses B, as indicated. These recesses are formed duringthe construction of the bolt or spike, and extend from a point p nea-i`the head to a point commencing at the.. bevel ofthe bolt, and withinsaid recesses are' y formed corrugations or ribs D, which hold and thatthe depth will-be greatest midway between the two ends, so as to securea perfect wedging eect when driven into the" wood.

Itwll be seen that, as thus constructed, when the spike is driven intothe sleeper, it will rst displace the bers of the wood, which willafterward spring into the grooves and be held and engaged by thecorrugations, causing a perfect dovetail with the spike and pre-`venting its removal under any strain without stripping the wood or'breaking the spike.

I am aware that spikes have been hereto-v fore made with straightlongitudinal recess provided with transverse ribs or corrugations,andsuch I do not intend to claim.

Having thus described my invention. what SiO minating near the beveledend,`and having55 their greatest depth midway between the ends,substantially as specified.

WILLIAM TAYLOR.

Witnesses: l

J osIAE, W. ELLs, JoNAs LINDLEY.

